JPH0287217U - - Google Patents
Info
- Publication number
- JPH0287217U JPH0287217U JP16810588U JP16810588U JPH0287217U JP H0287217 U JPH0287217 U JP H0287217U JP 16810588 U JP16810588 U JP 16810588U JP 16810588 U JP16810588 U JP 16810588U JP H0287217 U JPH0287217 U JP H0287217U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- signal output
- optical deflector
- pole
- rotation speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000005415 magnetization Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Brushless Motors (AREA)
Description
第１図〜第７図は本考案の実施例を示す。第１
は本考案に係る光偏向器の断面図。第２図、第３
図は第１図のＡ―Ａ′断面におけるメイン磁石と
ＦＧ磁石の着磁位相をそれぞれ表わす平面図。第
４図〜第６図はＦＧパターンでの出力波形図。第
７図はローターマグネツトとＦＧパターン部の斜
視図。第８図、第９図は従来例の光偏向器のそれ
ぞれの断面図。
１……回転多面鏡、２……メイン磁石、３……
ＦＧ磁石、４……ローターケース、５……プリン
ト基板、６……ＦＧパターン、７……電機子コイ
ル群、９……ローターマグネツト、１０……メイ
ン磁石によるＦＧパターンでの出力、１１……Ｆ
Ｇ磁石によるＦＧパターンでの出力、１２……合
成ＦＧ出力、２ａ……メイン磁石部、３ａ……Ｆ
Ｇ磁石部、２ｂ……メイン磁石部着磁位相、３ｂ
……ＦＧ磁石部着磁位相。
1 to 7 show embodiments of the present invention. 1st
is a sectional view of an optical deflector according to the present invention. Figures 2 and 3
The figure is a plan view showing the magnetization phases of the main magnet and the FG magnet, respectively, in the AA' cross section of FIG. 4 to 6 are output waveform diagrams in the FG pattern. FIG. 7 is a perspective view of the rotor magnet and the FG pattern section. FIGS. 8 and 9 are sectional views of conventional optical deflectors. 1... Rotating polygon mirror, 2... Main magnet, 3...
FG magnet, 4... Rotor case, 5... Printed circuit board, 6... FG pattern, 7... Armature coil group, 9... Rotor magnet, 10... Output in FG pattern by main magnet, 11... …F
Output in FG pattern by G magnet, 12...Synthetic FG output, 2a...Main magnet section, 3a...F
G magnet part, 2b... Main magnet part magnetization phase, 3b
...FG magnet part magnetization phase.
Claims (1)
着磁位相と回転速度信号出力用磁石の着磁位相に
おいて、前記駆動用磁石の極数をＰ、回転速度信
号出力磁石の極数をＰ、２Ｐとした時、前記駆動
用磁石の極が反転する位置に、前記回転速度信号
出力用磁石のＮ極或はＳ極の磁極中心を回転方向
に対し一致させて配設したことを特徴とする光偏
向器。 ２ 前記電動機駆動用磁石と回転速度信号出力用
磁石はプラスチツクマグネツトにより一体に形成
してなる請求項１記載の光偏向器。[Claims for Utility Model Registration] 1. In the magnetization phase of the motor drive magnet of the rotating polygon mirror type optical deflector and the magnetization phase of the rotation speed signal output magnet, the number of poles of the drive magnet is P, and the rotation speed is When the number of poles of the signal output magnet is P and 2P, the magnetic pole center of the N pole or S pole of the rotation speed signal output magnet is aligned with the rotation direction at the position where the pole of the drive magnet is reversed. An optical deflector characterized in that the optical deflector is arranged with a 2. The optical deflector according to claim 1, wherein the motor drive magnet and the rotational speed signal output magnet are integrally formed of a plastic magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988168105U JPH0511534Y2 (en) | 1988-12-26 | 1988-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988168105U JPH0511534Y2 (en) | 1988-12-26 | 1988-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0287217U true JPH0287217U (en) | 1990-07-10 |
| JPH0511534Y2 JPH0511534Y2 (en) | 1993-03-23 |
Family
ID=31456993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988168105U Expired - Lifetime JPH0511534Y2 (en) | 1988-12-26 | 1988-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0511534Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59178536A (en) * | 1983-03-30 | 1984-10-09 | Fujitsu Ltd | System for judging zero value of plural data |
| JPS6139841A (en) * | 1984-07-28 | 1986-02-26 | Tohoku Metal Ind Ltd | Dc brushless motor |
| JPS61108087U (en) * | 1984-11-16 | 1986-07-09 |
-
1988
- 1988-12-26 JP JP1988168105U patent/JPH0511534Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59178536A (en) * | 1983-03-30 | 1984-10-09 | Fujitsu Ltd | System for judging zero value of plural data |
| JPS6139841A (en) * | 1984-07-28 | 1986-02-26 | Tohoku Metal Ind Ltd | Dc brushless motor |
| JPS61108087U (en) * | 1984-11-16 | 1986-07-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0511534Y2 (en) | 1993-03-23 |
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